LUXOR, EGYPT—A Chinese tourist made headlines when he posted an apology on the Internet, along with a photograph of some graffiti left behind by a 15-year-old Chinese boy in a 3,500-year-old temple. Since the culprit had scrawled his name on the wall, he and his parents were soon tracked down by other Internet users. “We want to apologize to the Egyptian people and to people who have paid attention to this case across China,” the boy’s mother told the press. An attempt to clean the etching has been made, but it cannot be totally removed.